CN102884295A - Gas engine - Google Patents
Gas engine Download PDFInfo
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- CN102884295A CN102884295A CN2011800219545A CN201180021954A CN102884295A CN 102884295 A CN102884295 A CN 102884295A CN 2011800219545 A CN2011800219545 A CN 2011800219545A CN 201180021954 A CN201180021954 A CN 201180021954A CN 102884295 A CN102884295 A CN 102884295A
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- gas
- air
- pressurized machine
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- breathing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
- F02B19/1004—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/021—Control of components of the fuel supply system
- F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/026—Measuring or estimating parameters related to the fuel supply system
- F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/10—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels peculiar to compression-ignition engines in which the main fuel is gaseous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D23/00—Controlling engines characterised by their being supercharged
- F02D23/02—Controlling engines characterised by their being supercharged the engines being of fuel-injection type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/025—Failure diagnosis or prevention; Safety measures; Testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
Disclosed is a gas engine (10) provided with a power generator (16) coupled to an output shaft, an air intake passage (18) to which diluted methane-containing gas (VAM gas) for ventilation discharged from a coal mine is supplied, and gas mixing units (54a to 54d) for mixing high concentration methane-containing gas (CMM gas) provided in the air intake passage (18), wherein the diluted methane-containing gas and the high concentration methane-containing gas are mixed, and the mixed gas is supplied to and burned in a combustion chamber. Mixing ratio adjustment devices (26, 28) for adjusting the mixing ratio between the diluted methane-containing gas and the atmosphere are provided in the air intake passage upstream of a supercharger (30) provided in the air intake passage upstream of the gas mixing units, so that the temperature or the flow rate of intake gas introduced to the supercharger (30) is controlled within a predetermined range by an air intake control means (90A).
Description
Technical field
The present invention relates to gas engine that the gas that contains methane of rock gas and biogas or the discharge such as in the coal mine is effectively utilized as air-breathing gas and fuel.
Background technique
For methane CH
4, CO
2The public opinion of isothermal chamber effect gas discharging restriction is concerned about surging every year.Particularly methane has CO
221 times of greenhouse effect, can not ignore the discharging of methane in the atmosphere.On the other hand, when excavating coal, each ton coal 10 ~ 40Nm is arranged
3A large amount of methane gas of (being converted into pure methane gas) discharge to atmosphere in coal mine.
The gas that contains methane of discharging in coal mine is blended in the coal layer, having for safety utilizes vacuum pump from the gas CMM(Coal MineMethane that reclaims methane that contains of vent drill inspecting hole recovery, the concentration of methane gas is about 20 ~ 50% weight) and the gas VAM(Ventilation Air Methane that contains the methane of taking a breath that discharges from tunnel and development end in order to take a breath, the concentration of methane gas is less than 1% weight).
Therefore, make in the gas that contains methane from the coal mine to airborne release not to airborne release but effectively utilize, this is very large to society and economic contribution.
Patent documentation 1 discloses such gas turbine, and it can act as a fuel to utilize process such methane gas concentration gases lower than flammability limit such as a landfill gas that produces and above-mentioned coal mine Exhaust Gas at garbage loading embeading.
Patent documentation 2 discloses such generating gas engine, and its gas that contains methane of discharging in the coal mine acts as a fuel to use.Below by Fig. 7 patent documentation 2 disclosed gas engine power generating equipments are described.Fig. 7 schematically represents coal mine CM and is arranged near the gas engine power generating equipment 200 of coal mine CM.Among Fig. 7, the coal layer C of the stratiform of being formed arranged at coal mine CM
0With digging coal layer C
1Be provided with the air-vent 206 that in the coal mine and outside is communicated with.
Development end 204 in coal mine is at digging coal layer C
1Be equipped with vent drill inspecting hole 208, utilize the CMM gas of discharging from probing hole 208 vacuum pump 211 to carry to gas engine power generating equipment 200 from the pipeline 210 that is configured in the air-vent 206.And the VAM gas b that discharges by air-vent 206 in coal mine is carried to gas engine power generating equipment 200 by pipeline 212.The electric power E that gas engine power generating equipment 200 running produces and steam S application equipment 202 or other in the coal mine need the position to carry.
The prior art document
Patent document
Patent documentation 1: JP 2010-19247 communique
Patent documentation 2: No. 2005/0205022 specification of U.S. Patent Application Publication
Summary of the invention
The problem that invention will solve
The gas engine that methane gas is acted as a fuel has the considerably less advantage of the pollution of environment, is to expect the from now on extensive internal-combustion engine of popularizing.But since the gas that contains methane of discharging in the coal mine in time difference and the change of its discharge capacity is very large, just become problem so how can keep stable delivery volume for gas engine.
Owing to have and to reduce the NO that produces in the exhaust
XThe reason of concentration etc., so sometimes need the mixed proportion of the fuel gas scale of construction and air quantity is remained on the optimum air excess rate of regulation, but as previously mentioned, because the discharge capacity change of the gas that contains methane of discharging from coal mine is large, so keep the excess air ratio of regulation and be not easy.
In the gas engine, if the temperature of the mixed gas of supplying with to the firing chamber is not become the temperature of 40 ~ 45 ℃ of following certain limits, then might produce the abnormal combustions such as deflagration.Therefore, will be by becoming the air-breathing temperature of utilizing air-breathing cooler (interstage cooler) to be controlled to certain limit of High Temperature High Pressure behind the pressurized machine, but use from coal mine discharge contain the gas of methane the time, because this gas flow change that contains methane is large, and the performance of air-breathing cooler also has boundary, so the temperature of the mixed gas that control is supplied with to the firing chamber and being not easy.
The present invention is in view of the problem of prior art, and purpose is in the situation that the gas that contains methane is used with the fuel of gas engine as generating, keeps best excess air ratio and suppresses NO
XProduction, and also can stably be controlled to best excess air ratio for the change of the gas flow that contains methane.
And purpose is the temperature of the mixed gas of supplying with to the firing chamber is controlled to the best, prevents the abnormal combustions such as deflagration, for the change of the gas flow that contains methane and the mixed gas of can the opposed firing chamber supplying with carries out stable temperature control.
In order to reach this purpose, gas engine of the present invention has:
The generator that links with output shaft, supply with the air suction way of the gas that contains the thin concentration methane of idle call of discharging from coal mine and in the gas mixing section of mixing the gas that contains high concentration methane midway of this air suction way, the gas that contains thin concentration methane with the gas that contains high concentration methane mixes and supply with to the firing chamber and burn, wherein
Have: be arranged on described gas mixing section upstream side air suction way pressurized machine, be arranged on the upstream side air suction way of this pressurized machine and adjust the mixed proportion regulating device of the gas that contains thin concentration methane and atmosphere mixed proportion to the atmosphere mixing section of the gas hybrid atmospheric that contains thin concentration methane, in this atmosphere mixing section and control this mixed proportion regulating device and air-breathing temperature or flow control air-breathing control mechanism within the specific limits to the pressurized machine inflow.
According to device of the present invention, as long as utilize the idle call VAM gas of discharging in the coal mine as containing the gas of thin concentration methane, and utilize the CMM gas of discharging in the coal mine as the gas that contains high concentration methane, just can reduce greenhouse gases namely for methane gas releasing quantity to atmosphere in the coal mine.And can reduce the fuel gas consumption of gas engine by effectively utilizing idle call VAM gas.Namely can reduce the consumption of the gas that contains high concentration methane.
As the gas that contains high concentration methane of supplying with to gas engine and such as the bi-product gas that can utilize described CMM gas, rock gas, biogas, discharge from factory etc., landfill gas etc.
Control described mixed proportion regulating device by described air-breathing control mechanism, adjustment contains the mixed proportion of gas and the atmosphere of thin concentration methane, the air-breathing temperature that flows into to pressurized machine or flow control within the specific limits, carry out pressurized machine to the control of excess air ratio and be arranged on the air-breathing cooler in pressurized machine downstream side to the control of temperature so can stablize, even in the situation of the gas flow change that contains methane, also can be rapidly and be controlled to accurately best excess air ratio and mixed gas temperature, can keep stable burning.
Described mixed proportion regulating device is such as being made of the flow rate regulating valve etc. that is arranged on atmosphere and VAM gas and imports the road, can adjust the mixed proportion of atmosphere and VAM gas in the air suction way by the aperture of adjusting them.
In apparatus of the present invention, have: with the turbine spread configuration that is arranged on the described pressurized machine of exhaust passageway the part of exhaust is adjusted valve, controlled this extraction flow and adjust valve with the pressurized machine control mechanism of control pressurized machine action from the bypass of this turbine by-pass, the extraction flow of adjusting this bypass extraction flow, for the excess air ratio that makes the mixed gas of supplying with to described firing chamber becomes the target gas excess rate, utilize the inspiratory flow of this pressurized machine control mechanism control by pressurized machine for well.
Utilize the control of pressurized machine control mechanism by the inspiratory flow of pressurized machine, the mixed gas of supplying with to the firing chamber is controlled to the target gas excess rate.At this moment, because utilizing air-breathing control mechanism controls the air-breathing temperature that flows into to pressurized machine or flow or temperature and flow within the specific limits in advance, even so in the situation of the gas flow change that contains methane, by pressurized machine to the control of excess air ratio be arranged on the air-breathing cooler in pressurized machine downstream side to the control of temperature, also can be rapidly and be controlled to accurately best excess air ratio, can keep stable burning.
In apparatus of the present invention, described air-breathing control mechanism has the inhalation temperature control device, this inhalation temperature control device is controlled described mixed proportion regulating device, adjustment contains the mixed proportion of gas and the atmosphere of thin concentration methane, the inhalation temperature of pressurized machine upstream side air suction way is controlled at described pressurized machine control mechanism can be stablized in the certain temperature range that carries out as well the control of target gas excess rate.
It is said that to make described pressurized machine control mechanism can stablize the certain temperature range that carries out to the control of target gas excess rate for example be to be controlled at 20 ~ 25 ℃.Thus, even in the situation of the gas flow change that contains methane, also can make the inhalation temperature that flows into to pressurized machine stable, make the pressurized machine control mechanism to the control of excess air ratio and be arranged on the air-breathing cooler in pressurized machine downstream side to the control stabilization of temperature, make exhaust performance (NO
XDischarge capacity etc.) appropriateization, and can not produce the abnormal combustions such as deflagration, can bring into play to greatest extent engine performance.
On the basis of said structure, the target gas excess rate aligning gear that possesses the correction target excess air ratio, even in the gas that utilizes described inhalation temperature control device to control to contain thin concentration methane and the mixed proportion of atmosphere, in the time of can not being controlled at the inhalation temperature that flows into to pressurized machine in the certain temperature range, utilize this target gas excess rate aligning gear to change the target gas excess rate for well.
Even utilize described air-breathing control mechanism adjustment to contain the mixed proportion of gas and the atmosphere of thin concentration methane, also sometimes because the state of temperature of VAM gas or atmosphere, and can not be controlled at setting range to inhalation temperature.At this moment, utilize described target gas excess rate aligning gear to be corrected into to be adapted at the target gas excess rate of the temperature province running that departs from from setting range, become proofread and correct after target gas excess rate ground gas engine is turned round.For example target gas excess rate λ being corrected into the target gas excess rate that gas engine can control from λ=2.0 is λ=1.9, makes thus the gas engine can runs steadily.
In apparatus of the present invention, described air-breathing control mechanism has the inspiratory flow control device, this inspiratory flow control device is controlled described mixed proportion regulating device, the inspiratory flow of pressurized machine upstream side be controlled at can make described pressurized machine control mechanism in the stable certain limit of carrying out of the control of target gas excess rate for well.
Thus, even in the situation of the gas flow change that contains methane, also can make the gettering quantity that flows into to pressurized machine stable, the control of excess air ratio be come fast and highi degree of accuracy restrains to the target gas excess rate by the pressurized machine control mechanism.
In apparatus of the present invention, control described mixed proportion control gear, so that the gas flow that contains thin concentration methane of supplying with to described atmosphere mixing section is to allow maximum flow always.
Thus, owing to can maximally utilise VAM gas as the fuel of gas engine, so can make methane gas become inferior limit to the releasing quantity of atmosphere.And can reduce the fuel gas consumption of gas engine by effectively utilizing idle call VAM gas.Namely can reduce the consumption of the gas that contains high concentration methane.
In apparatus of the present invention, the part of the gas that contains high concentration methane is supplied with as well to the air suction way in pressurized machine upstream side and atmosphere mixing section downstream side.
Because the gas that contains high concentration methane is separately supplied with to the air suction way in pressurized machine downstream side and the air suction way of upstream side, so can be the machine type separate configuration such as control valve that are formed in air suction way and mix the gas mixing section of the gas that contains high concentration methane midway.Can make each machine type small-sized and lightweight by this separate configuration.Since can make the machine type such as control valve small-sized and lightweight, thus the problem that the space is set can be solved, and can reduce cost of parts.
The effect of invention
According to apparatus of the present invention, gas engine has: with the generator of output shaft binding, the air suction way of the gas that contains the thin concentration methane of idle call that supply is discharged from coal mine and in the gas mixing section of mixing the gas that contains high concentration methane midway of this air suction way, the gas that contains thin concentration methane with the gas that contains high concentration methane mixes and supply with to the firing chamber and burn, wherein, have: the pressurized machine that is arranged on described gas mixing section upstream side air suction way, be arranged on this pressurized machine the upstream side air suction way and to the atmosphere mixing section of the gas hybrid atmospheric that contains thin concentration methane, contain the gas of thin concentration methane and the mixed proportion regulating device of atmosphere mixed proportion in this atmosphere mixing section adjustment, control this mixed proportion regulating device and control the air-breathing temperature that flows into to pressurized machine or the air-breathing control mechanism of flow, as long as utilize the idle call VAM gas of discharging in the coal mine as containing the gas of thin concentration methane, and utilize the CMM gas of discharging in the coal mine as the gas that contains high concentration methane, just can reduce greenhouse gases namely for methane gas releasing quantity to atmosphere in the coal mine.And can reduce the fuel gas consumption of gas engine by effectively utilizing idle call VAM gas.Namely can reduce the consumption of the gas that contains high concentration methane.
Control the mixed proportion regulating device by air-breathing control mechanism, can control air-breathing temperature or the flow that flows into to pressurized machine by the mixed proportion of adjusting atmosphere and VAM gas.
Because the air-breathing temperature or the flow that flow into to pressurized machine are controlled within the specific limits in advance, carry out pressurized machine to the control of excess air ratio and be arranged on the air-breathing cooler in pressurized machine downstream side to the control of inhalation temperature so can stablize, even in the situation of the gas flow change that contains methane, also can be rapidly and be controlled to accurately best excess air ratio and mixed gas temperature, can keep stable burning.
Description of drawings
Fig. 1 is apparatus of the present invention the first embodiment's structural drawing;
Fig. 2 is the sectional view of the deflagrating jar of first embodiment's gas engine;
Fig. 3 is the flow chart of expression first embodiment's gas engine control sequence;
Fig. 4 is the square line chart of apparatus of the present invention second embodiment's engine controlling unit;
Fig. 5 is the flow chart of expression second embodiment's gas engine control sequence;
Fig. 6 is apparatus of the present invention the 3rd embodiment's structural drawing;
Fig. 7 is arranged on the schematic representation of coal mine gas engine power generating equipment nearby.
Embodiment
Below describe the present invention in detail with illustrated embodiment.But the size of the constitutional detail that this embodiment puts down in writing, material, shape, its relative configuration etc. just can not only be defined in this to scope of the present invention as long as no special specific record.
(embodiment 1)
First embodiment of apparatus of the present invention is described according to Fig. 1 ~ Fig. 3.The generating of present embodiment is arranged near the coal mine with gas engine, and gas and air-breathing and use the gas that contains methane of discharging in the coal mine acts as a fuel.Among Fig. 1, generating has engine body 12 with gas engine 10, and it has a plurality of (Fig. 1 the is four) deflagrating jar that forms the firing chamber in inside, and generator 16 links with the output shaft 14 of engine body 12.
The sucking pipe 18 that is connected with engine body 12 is provided with atmosphere mixing chamber (atmosphere mixing section) 20 at upstream side.Atmosphere ingress pipe 22 is connected with the VAM gas introduction tube and is connected with atmosphere mixing chamber 20.There is atmosphere a to be imported at atmosphere ingress pipe 22, has the idle call VAM gas b that discharges in the coal mine to be imported at VAM gas introduction tube 24.VAM gas is the gas that contains methane that the tunnel in the coal mine and development end are discharged in order to take a breath, and is that to contain methane concentration be thin concentration methane gas less than 1% weight.Become the mixed air-breathing mixed gas d of atmosphere a and VAM gas b in the inside of atmosphere mixing chamber 20.
Be respectively arranged with flow rate regulating valve 26 and 28 at atmosphere ingress pipe 22 and VAM gas introduction tube 24, their aperture is controlled by engine controlling unit (air-breathing control mechanism) 90A.Adjust the mixed proportion of atmosphere mixing chamber 20 interior air-breathing mixed gas d by the aperture of control flow rate regulating valve 26 and 28.At sucking pipe 18 and be the compressor 32 that is provided with pressurized machine 30 in 20 downstream sides of atmosphere mixing chamber.Compressor 32 links with turbine 34 and running shaft 36 that aftermentioned is arranged on outlet pipe 62, supplies with to air-breathing mixed gas d pressurization and to the deflagrating jar of engine body 12.
Be provided with air-breathing cooler (interstage cooler) 38 in the downstream side of pressurized machine 30.Be imported into cooling water w at this air-breathing cooler 38, after carrying out heat exchange and be cooled by the air-breathing of pressurized machine 30 and this cooling water w, supplied with to each deflagrating jar 56a ~ d through common sucking pipe 40 and air-breathing tap 42a ~ d.38 pairs of air-breathing temperature controls of air-breathing cooler are controlled by engine controlling unit 90A.
On the other hand, the CMM gas c that in coal mine, discharges 12 supplies from fuel gas supply pipe 44 to engine body.As shown in Figure 7, CMM gas c is blended in the coal layer, be to utilize vacuum pump 211 from the gas that reclaims methane that contains of vent drill inspecting hole 208 recovery for safety, and be the gas that contains high concentration methane that contains about 20 ~ 50% weight of methane concentration.Begin from upstream side at fuel gas supply pipe 44 and be provided with knock out drum 46, flow rate regulating valve 48 and gas compressor 50.The aperture of flow rate regulating valve 48 is controlled by engine controlling unit 90A.
Fuel gas supply pipe 44 is four fuel tap 52a ~ d by fork, and each fuel tap 52a ~ d is connected with air-breathing tap 42a ~ d respectively.
Compressed at gas compressor 50 to the CMM gas c that fuel gas supply pipe 44 is carried, 52a ~ d supplies with to air-breathing tap 42a ~ d through the fuel tap.In this air-breathing tap air-breathing mixed gas d and CMM gas c are carried out premixing, this mixed gas becomes fuel gas g(with reference to Fig. 2) and to each deflagrating jar 56a ~ d supply.Be respectively arranged with flow rate regulating valve 54a ~ d at each fuel tap 52a ~ d, the aperture of these flow rate regulating valves is controlled by engine controlling unit 90A.Flow rate regulating valve 54a ~ d formation is gas mixing section from the joint that fuel tap 52a ~ d goes to air-breathing tap 42a ~ d.
Head at each deflagrating jar 56a ~ d is connected with respectively exhaust tap 58a ~ d.Exhaust tap 58a ~ d is connected with common outlet pipe 60, and common outlet pipe 60 is connected with outlet pipe 62.Be provided with the turbine 34 of pressurized machine 30 at outlet pipe 62.The exhaust e that discharges from each deflagrating jar 56a ~ d is discharged from through exhaust tap 58a ~ d, common outlet pipe 60 and outlet pipe 62.And turbine 34 is connected with outlet pipe 62 with the bypass tube 64 of bypass, be provided with flow rate regulating valve 66 at bypass tube 64.The aperture of flow rate regulating valve 66 is controlled by engine controlling unit 90A.
Then, utilize Fig. 2 that the structure of the deflagrating jar 56a of engine body 12 ~ d head is described.Among Fig. 2, piston 70 is arranged in to-and-fro motion in the inside of deflagrating jar 56a ~ d.On piston 70, be provided with recess 70a, above this recess 70a, be formed with main combustion chamber m.Upper central at deflagrating jar 56a ~ d is equipped with nozzle body 72.In the inside of nozzle body 72 nozzle 76 is installed, below nozzle 76, is formed with concubine s.Conduit 78 connects nozzle bodies 72 ground and is connected with nozzle 76, by conduit 78 the internal feed of master control fuel p to nozzle 76.
On the deflagrating jar of nozzle body 72 both sides, be provided with the intakeport that is communicated with air-breathing tap 42a ~ d and the relief opening that is communicated with exhaust tap 58a ~ d.And the Aspirating valves 80 that opens and closes this intakeport and the outlet valve 82 that opens and closes this relief opening are set.Be provided with the exhaust gas temperature sensor 84 that detects delivery temperature at each exhaust tap 58a ~ d, the checkout value of exhaust gas temperature sensor 84 is transmitted to engine controlling unit 90A.
For the air-breathing mixed gas d that flows at air-breathing tap 42a ~ d, and supply with CMM gas c from fuel tap 52a ~ d, both premixings are become fuel gas g, the interior supply from intakeport to deflagrating jar 56a ~ d.Fuel gas g in this deflagrating jar is pressurizeed by piston 70 and becomes the high pressure-temperature state, enters concubine s from the spray orifice 74 that passes nozzle body 72 bottoms.On the other hand, master control fuel p is sprayed from nozzle 76 to concubine s, this master control fuel p is by the fuel gas g of high-temperature high-pressure state igniting, and flame is propagated to main combustion chamber m from the hole 74 of passing nozzle body 72 bottoms in the concubine s that is lighted a fire, and expands to flame f at main combustion chamber m.
Expand at main combustion chamber m fuel gas g, piston 70 is pressed downwards and made output shaft 14 rotations.Exhaust e after the burning is discharged from by exhaust tap 58a ~ d, common outlet pipe 60 and outlet pipe 62.
Turn back to Fig. 1, be provided with the diagram abridged in-cylinder pressure sensor of the speed probe 85 that detects output shaft 14 rotating speeds and the main combustion chamber m pressure that detects each deflagrating jar 56a ~ d etc., the checkout value that is included the described sensor detection of exhaust gas temperature sensor 84 is sent to engine controlling unit 90A.Control the output of gas engine 10 and the combustion regime of main combustion chamber m according to these checkout values by motor output control mechanism 92.
Be provided with at the sucking pipe 18 between pressurized machine 30 and atmosphere mixing chamber 20: detection is to the inhalation temperature sensor 87 of the temperature of the air-breathing mixed gas d of compressor 32 inflows of pressurized machine 30, the inspiratory pressure sensor 88 of detection pressure of inspiration(Pi).These checkout values are carried to engine controlling unit 90A.
In this structure, utilize the pressurized machine control mechanism 94 of engine controlling unit 90A to control the aperture of flow rate regulating valve 66, and be controlled at the flow of the exhaust that bypass tube 64 flows.Thus, control the extraction flow that flows at outlet pipe 62, controlled the secondary speed of pressurized machine 30, controlled the inspiratory flow that flows at sucking pipe 18.
Can be controlled to the target gas excess rate to the excess air ratio λ of the mixed gas g that supplies with to described firing chamber by such control to the inspiratory flow of pressurized machine 30 inflows.
The computational methods of excess air ratio λ are, detect the temperature and pressure of air-breathing mixed gas d by inhalation temperature sensor 87 and inspiratory pressure sensor 88, calculate the density of air-breathing mixed gas d from these checkout values.Then, from this density calculation flow.On the other hand, calculate the flow of the CMM gas c that flows at fuel gas supply pipe 44 from the aperture of flow rate regulating valve 48.Calculate the approximative value λ ' of excess air ratio from the flow of the flow of the air-breathing mixed gas d that calculates like this and CMM gas c.Owing in air-breathing mixed gas d, contain the methane gas of VAM gas b, so what above-mentioned computational methods calculated is not the correct calculated value of excess air ratio λ, but because the methane concentration of VAM gas b very low less than 1% weight normally, so the air-breathing mixed gas d in the sucking pipe 18 as putting on an equal footing with air, is regarded as
Calculate.
Among Fig. 1, the thermometer of the atmosphere a that imports from atmosphere ingress pipe 22 is shown T
Air, flowmeter is shown Q
Air, the thermometer of the VAM gas b that imports from VAM gas introduction tube 24 is shown T
VAM, flowmeter is shown Q
VAM, the thermometer of the air-breathing mixed gas d that flows into to pressurized machine 30 is shown T
V+A, flowmeter is shown Q
V+AAnd Q
V+A=Q
Air+ Q
VAM
The temperature of the VAM gas b that discharges in the coal mine under atmospheric pressure is 20 ~ 25 ℃ usually, but the air-breathing mixed gas d that flow at sucking pipe 18 are heated up by compressor 32.The temperature of the fuel gas g that supplies with to main combustion chamber m is influential to the combustion regime at the fuel gas g of main combustion chamber m, because the temperature of fuel gas g and might producing is caught fire and the abnormal combustion such as deflagration.Because the density of air-breathing mixed gas d is different with the difference of temperature, so the temperature of air-breathing mixed gas d is also influential to excess air ratio λ.
Therefore, usually need to be controlled at the temperature of the fuel gas g that supplies with to main combustion chamber m in the predetermined range below 40 ~ 45 ℃.Utilize the air-breathing cooler 38 in pressurized machine 30 downstream sides to come air-breathing mixed gas d is cooled off control, but owing to the performance limitations of air-breathing cooler 38 with in order to carry out stable excess air ratio control, just need to be the Temperature Setting of the air-breathing mixed gas d that flows into to pressurized machine 30 at 20 ~ 25 ℃.Utilize Fig. 3 that this inhalation temperature control sequence is described.
In the present embodiment, utilize pressurized machine control mechanism 94 to control the flow Q of the air-breathing mixed gas d that supplies with to the firing chamber by the compressor 32 of pressurized machine 30
V+A, controlling to becomes target gas excess rate λ
0Flow.For example according to reducing NO among the exhaust e
XThe viewpoint of concentration is target gas excess rate λ
0Be set as λ
0=2.0.Fig. 3 is in the state of a control of 30 pairs of these target gas excess rates of pressurized machine, and expression is the temperature T of this air-breathing mixed gas d
V+ABe controlled to setting temperature T
SUC(T
SUC1＜T
SUC＜T
SUC2) the flow chart of Control sequence.This T
SUCScope for example as the scope of uniform temperature but 20 ~ 25 ℃ scope.
Among Fig. 3, begin control at step S10, working as at step S12 is T
V+A＜T
SUC1The time, then advance to step S14.Working as at step S14 is T
SUC1＜T
V+AThe time, then increase the flow Q of VAM gas by the aperture by inhalation temperature control device 96 control flow rate regulating valves 26 and 28
VAM, and reduce air volume Q
AirThus, make the temperature T of air-breathing mixed gas d
V+ARise, to become the setting temperature scope.And the flow Q of VAM gas
VAMWith air volume Q
AirThe total flow be the flow Q of air-breathing mixed gas d
V+ADo not change.
Ought not T at step S14
SUC1＜T
V+AThe time, then advance to step S16.Working as at step S16 is T
SUC1＜T
AirThe time, then reduce the flow Q of VAM gas
VAM, and increase air volume Q
AirThus, make the temperature T of air-breathing mixed gas d
V+ARise, to become the setting temperature scope.
Ought not T at step S16
SUC1＜T
AirThe time, then because VAM gas temperature T
VAMWith atmospheric temperature T
AirAll than T
SUC1Height is so judge and can not be controlled at setting range to the temperature of air-breathing mixed gas d.Therefore, be corrected into the target gas excess rate λ of the situation running that is suitable for the temperature province that air-breathing mixed gas d departs from by excess air ratio aligning gear 98
0' (λ for example
0'=2.0+0.1).And in order to become the target gas excess rate λ after the correction
0', change the setting flow Q of air-breathing mixed gas d
SUC(Q
SUC→ Q
SUC+i), utilize pressurized machine control mechanism 94 to make the flow of air-breathing mixed gas d become Q
SUC+iThe aperture of flow rate regulating valve 66 is controlled on ground.
Ought not T at step S12
V+A＜T
SUC1The time, then advance to step S18.Ought not T at step S18
SUC2＜T
V+AThe time, then because the temperature T of air-breathing mixed gas
V+ABe in the setting temperature scope, so return to step S12.Working as at step S18 is T
SUC2＜T
V+AThe time, then advance to step S20.Working as at step S20 is T
V+A＜T
SUC2The time, then increase the flow Q of VAM gas
VAM, and reduce air volume Q
AirThus, make the temperature T of air-breathing mixed gas d
V+ADescend, to become the setting temperature scope.
Ought not T at step S20
VMA＜T
SUC2The time, then advance to step S22.Working as at step S22 is T
Air＜T
SUC2The time, then reduce the flow Q of VAM gas
VAM, and increase air volume Q
AirThus, make the temperature T of air-breathing mixed gas d
V+ADescend, to become the setting temperature scope.
Ought not T at step S22
Air＜T
SUC2The time, then because VAM gas temperature T
VAMWith atmospheric temperature T
AirAll than T
SUC2Low, so judge and can not be controlled at setting range to the temperature of air-breathing mixed gas d.Therefore, be corrected into the target gas excess rate λ of the situation running that is suitable for the temperature province that mixed gas departs from by excess air ratio aligning gear 98
0" (for example λ 0 "=2.0-0.1).And in order to become the target gas excess rate λ 0 after the correction ", change the setting flow Q of air-breathing mixed gas d
SUC(Q
SUC→ Q
SUC-i), utilize pressurized machine control mechanism 94 to make the flow of air-breathing mixed gas d become Q
SUC -iThe aperture of flow rate regulating valve 66 is controlled on ground.
In the present embodiment, utilizing inhalation temperature control device 96 to control the temperature T of air-breathing mixed gas d
V+AThe time, in the permissible range of being everlasting the flow Q of VAM gas b
VAMBe controlled to maximum.Thus, can maximally utilise the VAM gas flow.
According to present embodiment, the VAM gas b that discharges in coal mine is utilized as the air-breathing of gas engine 10, and CMM gas c utilized as the fuel gas of gas engine 10, therefore, can reduce greenhouse gases namely for methane gas releasing quantity to atmosphere in the coal mine.
By utilizing pressurized machine control mechanism 94 to control the flow of the exhaust e of turbine 34 bypass of pressurized machine 30, then can be controlled to the target gas excess rate to the excess air ratio λ of the fuel gas g that supplies with to deflagrating jar 56a ~ d.Therefore, can be suppressed among the exhaust e and produce NO
XDeng, and can not produce the abnormal combustions such as deflagration, can bring into play to greatest extent engine performance.
Since the air-breathing mixed gas d of atmosphere a and VAM gas b as air-breathing, so just can make air-breathing supply stabilization to deflagrating jar 56a ~ d by the delivery volume of adjusting atmosphere according to the delivery volume of VAM gas b.Therefore, even VAM gas b has large change, also can make the air-breathing delivery volume stabilization to deflagrating jar 56a ~ d.
Because by controlling air-breathing temperature to air-breathing middle importing atmosphere a, so the control of inhalation temperature is easy.And the inhalation temperature before flowing into to pressurized machine 30 is controlled at 20 ~ 25 ℃ scope, the control that can make the control of 94 pairs of excess air ratios of pressurized machine control mechanism and be arranged on 38 pairs of inhalation temperatures of air-breathing cooler in pressurized machine 30 downstream sides is stably carried out, even in the situation of the gas flow change that contains methane, also can carry out rapidly and accurately the control of optimum air excess rate with for the control of the best mixed gas temperature of firing chamber, can keep stable burning.
When even the mixed proportion of the atmosphere a that adjusts sucking pipe 18 and VAM gas b can not be adjusted to setting range to the temperature of air-breathing mixed gas d, utilize excess air ratio aligning gear 98 to change over to be suitable for the target gas excess rate of the temperature province working order that air-breathing mixed gas d departs from, so can not bring obstacle for the running of gas engine.Under namely target gas excess rate λ for example being corrected into 1.9 situation from λ=2.0, owing to depart from and to NO from the excess air ratio of theory
XDeng exhaust performance bad impact is arranged, but can make the gas engine runs steadily owing to set the target gas excess rate that gas engine can control for.
In the scope that can be controlled to excess air ratio λ the target gas excess rate, and can be controlled at the temperature of air-breathing mixed gas d under the condition of setting range, the mixed proportion of atmosphere a and VAM gas b is adjusted to the flow of VAM gas is become to greatest extent.Therefore, can reduce to greatest extent VAM gas b to the discharge amount of atmosphere, and can maximally utilise the heat of the methane gas that comprises among the VAM gas b, so can reduce the consumption that the gas that contains high concentration methane is CMM gas.
(embodiment 2)
Then, utilize Fig. 4 and Fig. 5 that second embodiment of apparatus of the present invention is described.Present embodiment is that the temperature of air-breathing mixed gas d has entered setting range, at this moment excess air ratio λ is controlled to the example of target gas excess rate situation.Fig. 4 represents the engine controlling unit 90B of present embodiment.Engine controlling unit 90B uses engine controlling unit 90A to compare with the first embodiment, is to have replaced the inhalation temperature control device 96 of engine controlling unit 90A and λ aligning gear 98 and be provided with inspiratory flow control device 100.Other structures of engine controlling unit 90B are then identical with engine controlling unit 90A.And the overall structure beyond the engine controlling unit is also identical with the first embodiment.
Inspiratory flow control device 100 is adjusted the aperture of flow rate regulating valve 26 and 28 according to the checkout value of inhalation temperature sensor 87 and inspiratory pressure sensor 88, thus, adjust the mixed proportion of atmosphere a and VAM gas b, can adjust to the flow of the air-breathing mixed gas d of pressurized machine 30 inflows.Below, the flow adjustment order of the air-breathing mixed gas d of present embodiment is described by Fig. 5.
Fig. 5 is the flow Q air-breathing mixed gas d
V+AControl is (Q within the specific limits
SUC1＜Q
SUC＜Q
SUC2) flow chart.That is, the control example of expression is, the flow Q of the air-breathing mixed gas d of the target gas excess rate of relatively setting
V+AThe control range minimum value be set as Q
SUC1, maximum value is set as Q
SUC2The time, Q
V+AEnter this control range and can supply with the flow Q of VAM gas b
VAMIn become maximum.Q among the figure
VAM2It is the maximum figure amount of VAM gas b.
Among Fig. 5, begin control at step S30.Working as at step S32 is Q
V+A＜Q
SUC1The time, then advance to step S34.Working as at step S34 is Q
VAM＜Q
VAM2The time, then increase the flow of VAM gas b, making with the flow that increases air-breathing mixed gas d becomes setting range.Not Q
VAM＜Q
VAM2The time, then reduce the flow of VAM gas, so that the flow of VAM gas becomes Q
VAM2Below, and increase the flow of atmosphere a, making with the flow that increases air-breathing mixed gas d becomes setting range.
Ought not Q at step S32
V+A＜Q
SUC1The time, then advance to step S36.Ought not Q at step S36
SUC2＜Q
V+AThe time, because the flow of air-breathing mixed gas d is in setting range, so return identical order repeatedly to step S32.
Working as at step S36 is Q
SUC2＜Q
V+AThe time, then be Q
V+ACrossed setting range, S38 advances to step.Working as at step S38 is 0＜Q
AirThe time, then reduce the flow of atmosphere a, so that Q
V+ABecome setting range.Not 0＜Q
AirThe time, then reduce the flow of VAM gas b, so that Q
V+ABecome setting range.
So just the flow of the air-breathing mixed gas d of pressurized machine 30 inflow sides is maintained setting range.According to present embodiment, utilize inspiratory flow control device 100 to control the air-breathing mixed gas scale of construction of pressurized machine 30 inflow sides, the control of 94 pairs of excess air ratios of pressurized machine control mechanism is carried out fast and accurately.Even in the situation of the gas flow change that contains methane, also can stably carry out the control of excess air ratio.
(embodiment 3)
Then, utilize Fig. 6 that the 3rd embodiment of apparatus of the present invention is described.Among Fig. 6, fuel gas bifurcated pipe 110 is connected with knock out drum 46, and the sucking pipe 18 between compressor 32 and atmosphere mixing chamber 20 arranges gas mixer 112.And fuel gas bifurcated pipe 110 is connected with gas mixer 112,18 supplies from gas mixer 112 to sucking pipe of the part of CMM gas c.Be provided with filter 114 and flow rate regulating valve 116 at fuel gas bifurcated pipe 110.The aperture of flow rate regulating valve 116 is controlled by engine controlling unit 90A.Other structures that comprise engine controlling unit 90A are then identical with above-mentioned the first embodiment.
Among the 3rd embodiment, consist of gas mixing section by flow rate regulating valve 54a ~ d and gas mixer 112.
Present embodiment is by carrying out the control of excess air ratio and the temperature control of air-breathing mixed gas d with the same operation of the first embodiment.At this moment, the part of CMM gas c is supplied with to sucking pipe 18 by fuel gas bifurcated pipe 110.
Present embodiment is owing to supplying with the part of CMM gas c, so on the basis of first embodiment's action effect, can reduce the CMM gas c flow of supplying with to air-breathing tap 42a ~ d by fuel gas supply pipe 44 to sucking pipe 18.Therefore, can make the machine type miniaturizations such as air-breathing tap 42a ~ d and flow rate regulating valve 54a ~ d, not need to arrange the space, cheaply advantage of cost of equipment is arranged.
The possibility of utilizing on the industry
According to generating gas engine of the present invention, can effectively utilize the gas that contains methane and the discharging that suppresses greenhouse gases, and can under appropriate excess air ratio, carry out smooth combustion.
Claims (7)
1. gas engine, have: the generator that links with output shaft, supply with the air suction way of the gas that contains the thin concentration methane of idle call of discharging from coal mine and in the gas mixing section of mixing the gas that contains high concentration methane midway of this air suction way, the gas that contains thin concentration methane with the gas that contains high concentration methane mixes and supply with to the firing chamber and burn, it is characterized in that
Have: be arranged on described gas mixing section upstream side air suction way pressurized machine, be arranged on the upstream side air suction way of this pressurized machine and adjust the mixed proportion regulating device of the gas that contains thin concentration methane and atmosphere mixed proportion to the atmosphere mixing section of the gas hybrid atmospheric that contains thin concentration methane, in this atmosphere mixing section and control this mixed proportion regulating device and air-breathing temperature or flow control air-breathing control mechanism within the specific limits to described pressurized machine inflow.
2. gas engine as claimed in claim 1, it is characterized in that, have: with the turbine spread configuration of the described pressurized machine that is arranged on exhaust passageway the part of exhaust is adjusted valve, controlled this extraction flow and adjust valve with the pressurized machine control mechanism of control pressurized machine action from the bypass of this turbine by-pass, the extraction flow of adjusting this bypass extraction flow, for the excess air ratio that makes the mixed gas of supplying with to described firing chamber becomes the target gas excess rate, utilize this pressurized machine control mechanism control by the inspiratory flow of pressurized machine.
3. gas engine as claimed in claim 2, it is characterized in that, described air-breathing control mechanism has the inhalation temperature control device, this inhalation temperature control device is controlled described mixed proportion regulating device, adjustment contains the mixed proportion of gas and the atmosphere of thin concentration methane, the inhalation temperature of the air suction way of pressurized machine upstream side is controlled at described pressurized machine control mechanism can be stablized in the certain temperature range that carries out the control of target gas excess rate.
4. gas engine as claimed in claim 3, it is characterized in that, the target gas excess rate aligning gear that possesses the correction target excess air ratio, even in the gas that utilizes described inhalation temperature control device to control to contain thin concentration methane and the mixed proportion of atmosphere, in the time of can not being controlled at the inhalation temperature that flows into to pressurized machine in the described certain temperature range, utilize described target gas excess rate aligning gear to change the target gas excess rate.
5. gas engine as claimed in claim 2, it is characterized in that, described air-breathing control mechanism has the inspiratory flow control device, this inspiratory flow control device is controlled described mixed proportion regulating device, the inspiratory flow of pressurized machine upstream side is controlled at can make described pressurized machine control mechanism in the stable certain limit of carrying out of the control of target gas excess rate.
6. such as each described gas engine of claim 1 ~ 5, it is characterized in that, control described mixed proportion control gear, so that the gas flow that contains thin concentration methane of supplying with to described atmosphere mixing section is to allow maximum flow always.
7. such as each described gas engine of claim 1 ~ 6, it is characterized in that, the part of the gas that contains high concentration methane is supplied with to described pressurized machine upstream side and to the air suction way in described atmosphere mixing section downstream side.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2010124052A JP5314637B2 (en) | 2010-05-31 | 2010-05-31 | Gas engine |
| JP2010-124052 | 2010-05-31 | ||
| PCT/JP2011/061455 WO2011152218A1 (en) | 2010-05-31 | 2011-05-18 | Gas engine |
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| CN102884295B CN102884295B (en) | 2016-11-09 |
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| US (1) | US9086022B2 (en) |
| EP (1) | EP2578849B8 (en) |
| JP (1) | JP5314637B2 (en) |
| KR (1) | KR101399224B1 (en) |
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| Publication number | Publication date |
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| KR101399224B1 (en) | 2014-05-27 |
| JP5314637B2 (en) | 2013-10-16 |
| EP2578849B8 (en) | 2018-09-12 |
| KR20120135305A (en) | 2012-12-12 |
| JP2011247238A (en) | 2011-12-08 |
| EP2578849A1 (en) | 2013-04-10 |
| CN102884295B (en) | 2016-11-09 |
| EP2578849A4 (en) | 2017-01-11 |
| US20130055712A1 (en) | 2013-03-07 |
| WO2011152218A1 (en) | 2011-12-08 |
| US9086022B2 (en) | 2015-07-21 |
| EP2578849B1 (en) | 2018-08-08 |
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